Where does “Ulf” come from?

Ulf (Danish) comes from Old Norse úlfr, from Proto-Germanic wulfaz, from Proto-Indo-European wĺ̥kʷos — wolf.

Ancestry of “Ulf”, step by step

StepLanguageWordMeaning
1Old Norseúlfrwolf
2Proto-Germanicwulfazwolf
3Proto-Indo-Europeanwĺ̥kʷoswolf
Every word from Proto-Indo-European wĺ̥kʷos →Every word from Proto-Germanic wulfaz →Every word from Old Norse úlfr →